File:Hiroimono example.svg

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Solving a Goishi Hiroi puzzle adapted from http://link.springer.com/chapter/10.1007/978-3-031-39344-0_13 by CMG Lee.

1.  An example with a fixed first stone.
2. A failed attempt: as U-turns are not allowed, the top-right stone must be the last.
3. A failed attempt: as stone 4 is removed on passing it, there is nowhere to go from stone 7.
4. The unique solution, even if stone 1 is not fixed.
Source Own work
Author Cmglee

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current00:45, 30 July 2024Thumbnail for version as of 00:45, 30 July 2024512 × 683 (4 KB)Cmglee (talk | contribs)Centre numbers
00:42, 30 July 2024Thumbnail for version as of 00:42, 30 July 2024512 × 683 (4 KB)Cmglee (talk | contribs){{Information |Description=Solving an example Goishi Hiroi puzzle by CMG Lee. <table cellpadding="0" cellspacing="0"> <tr><td valign="top">1. </td> <td>A puzzle with a marked first stone.</td></tr> <tr><td valign="top">2.</td> <td>A failed attempt: as U-turns are not allowed, the top-right stone must be the last stone.</td></tr> <tr><td valign="top">3.</td> <td>A failed attempt: as stone 4 is removed on passing it, there is nowhere to go from stone 7.</td></tr> <tr><td valign="top">4....

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